ATM250
HYPERCARDIOID DYNAMIC
INSTRUMENT MICROPHONE
ATM250 SPECIFICATIONS†
ELEMENT
Dynamic
POLAR PATTERN
Hypercardioid
FREQUENCY RESPONSE
40-15,000 Hz
OPEN CIRCUIT SENSITIVITY
–54 dB (1.9 mV) re 1V at 1 Pa*
IMPEDANCE
600 ohms
WEIGHT
252 g (8.9 oz)
DIMENSIONS
127.5 mm (5.02") long,
55.0 mm (2.17") diameter
OUTPUT CONNECTOR
Integral 3-pin XLRM-type
ACCESSORIES FURNISHED
AT8471 isolation clamp for
5
/8"-27 threaded stands;
5
/8"-27 to 3/8"-16 threaded adapter;
soft protective pouch
• Frequency response tailored for kick drum, percussion, brass, and
other highly dynamic instruments
• Handles very high SPL at close range
• Big, warm low-frequency response with excellent presence
†In the interest of standards development, A.T.U.S. offers full details on its test
methods to other industry professionals on request.
*1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL
Specifications are subject to change without notice.
• Hypercardioid polar pattern reduces pickup of sounds from the
sides and rear, improving isolation of desired sound source
Frequency Response
Polar Pattern
Response in dB
• Durable performance for professional applications
• Hi-ENERGY® neodymium magnet for improved output and
transient response
• Superior off-axis rejection for maximum gain before feedback
Frequency in Hertz
• Corrosion-resistant contacts from gold-plated XLRM-type
connector
LEGEND
12" or more on axis
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
• Rugged, all-metal design and construction for years of trouble-free
use
• Includes isolation clamp for shock protection, secure mounting and
easy positioning
Output from the microphone's XLRM-type connector is low
impedance (Lo-Z) balanced. The signal appears across Pins 2 and
3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”– positive
acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be
wired consistently: Pin 1-to-Pin 1, etc.
The ATM250 includes an AT8471 isolation clamp to provide secure
mounting, versatile positioning and effective dampening of
unwanted mechanical noise.
Take care to keep foreign particles from entering the windscreen. An
accumulation of iron or steel filings on the diaphragm, and/or foreign
material in the windscreen's mesh surface, can degrade
performance.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51799
©2006 Audio-Technica U.S., Inc.
Printed in China